Anyway, that was racquemis' method.
Mine is a little bit different.

Did you see the Python script I posted above?
Copy it into Notepad and save it in C:\Python27 as dumpwallet.py (make sure it's not .txt!), and then open the command prompt.

Enter the following:

The private_keys.txt file in C:\Python27 will contain a list of WIF private keys extracted from your wallet.
You can import them into Electrum later, if you succeed.

Make sure that your PC is not connected to the internet while running the commands for extra security.